Parker-hannifin Corporation

Debasis Banerjee

Praveen K Thallapally

Bernard P McGrail

Huidong Li

Jun Lu

Raghujit Prasad Kunapuli

Jian Liu

Raghuit Prasad Kunapuli

Michael A Sinwell

Deng Zhiqun

Rahujit Prasad Kunapuli

Bernard P Mcgrail

A filter-drier unit for a refrigerant includes an exterior housing formed of a hard material, and a desiccant material supported within the exterior housing and being formed of a metal-organic framework material having inorganic metal ions and bridging ligands that link the metal ions. The metal-organic framework has a three-dimensional permanently porous structure that has at least one chemically tunable characteristic, such as pore size, pore volume, and surface area.

Metal-organic framework (MOF) materials for superior refrigerant drying performance

A SAW sensor is optimized for detection of refrigerant leakage in a refrigerant system or other gases, vapors, explosives or chemicals of interest. The SAW sensor includes a piezoelectric substrate; an interdigitated transducer deposited on the piezoelectric substrate, the interdigitated transducer having an input portion that receives input surface acoustic waves and an output portion that emits output surface acoustic waves; and a refrigerant sensor film located between the input portion and the output portion of the interdigitated transducer, the refrigerant sensor film including a sorbent material that is selected for preferential adsorption of a target refrigerant over atmospheric gases. Adsorption of the target refrigerant by the sorbent material results in a frequency shift of a frequency of the output surface acoustic waves relative to a frequency of the input surface acoustic waves. The sorbent material may be a metal organic framework (MOF) material, a covalent organic framework (COF) material, a porous organic cage or organic macrocyles such as calix [n] arene and its related derivatives.

Surface acoustic wave sensor for refrigerant leakage detection

Growing community of inventors

Ellisville, MO, United States of America

Debasis Banerjee